[Bug 73957] New: [ILK Bisected]Piglit/spec_glsl-1.10_execution_vs-call-in-nested-loop fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73957

          Priority: high
            Bug ID: 73957
                CC: idr at freedesktop.org
          Assignee: stereotype441 at gmail.com
           Summary: [ILK
                    Bisected]Piglit/spec_glsl-1.10_execution_vs-call-in-ne
                    sted-loop fails
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Drivers/DRI/i965
           Product: Mesa

System Environment:
--------------------------
Platform: Ironlake 
Libdrm:        (master)libdrm-2.4.52
Mesa:        (master)1032c33cb93f1e8839be0f743b81492c2ca87e39
Xserver:   
(master)xorg-server-1.15.0-1-ga92c6406e7f6c0b74fb1cb9361ad904facc0f722
Xf86_video_intel:(master)2.99.907-46-g2c441079cbd52902d356b652659e2be84726940e
Cairo:        (master)2a7f133639bed86a29dd9693cb78c0aa42eaff30
Libva:        (staging)79ddde6bab54618046f136471c020c08ff4fde50
Libva_intel_driver:(staging)6736a39fce442a8e5abb2a2e99adf56e3965d35f
Kernel:    (drm-intel-nightly) 164a4cb4c1431a0689f85507868356fae24da638

Bug detailed description:
-----------------------------
It fails on Ironlake with mesa master branch. It doesn't happen on mesa 10.0
branch.
spec_glsl-1.10_execution_vs-inner-loop-modifies-outer-loop-var also fails by
same bisect commit.
spec_EGL_EXT_client_extensions_conformance_test_3 skip by same bisect commit.

Bisect shows: 1032c33cb93f1e8839be0f743b81492c2ca87e39 is the first bad commit.
commit 1032c33cb93f1e8839be0f743b81492c2ca87e39
Author:     Paul Berry <stereotype441 at gmail.com>
AuthorDate: Thu Jan 9 11:34:33 2014 -0800
Commit:     Paul Berry <stereotype441 at gmail.com>
CommitDate: Tue Jan 21 20:25:52 2014 -0800

    mesa: Change redundant code into loops in texstate.c.

    This is possible now that ctx->Shader.CurrentProgram is an array.

    Reviewed-by: Chris Forbes <chrisf at ijw.co.nz>
    Reviewed-by: Brian Paul <brianp at vmware.com>

output:
Probe color at (0,0)
  Expected: 0.000000 1.000000 0.000000 1.000000
  Observed: 1.000000 0.000000 0.000000 1.000000
PIGLIT: {'result': 'fail' }


Reproduce steps:
----------------------------
1. xinit
2. ./bin/shader_runner
tests/spec/glsl-1.10/execution/vs-call-in-nested-loop.shader_test -auto

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